Cybersecurity by executive order

This report explores the details of the Obama Administration\u27s executive order on cybersecurity, breaking down the challenges, criticisms, and successes of the effort to date, before offering clear lessons from the US experience that can be applied to the Australian context. Summary: On 12 February 2014 the United States National Institute of Standards & Technology (NIST) released the Framework for Improving Critical Infrastructure Cybersecurity, the flagship accomplishment of the Obama Administration’s 2013 cybersecurity Executive Order. Just weeks before the White House announced its executive order, the then Australian Prime Minister Julia Gillard made an equally exciting declaration introducing the Australian Cyber Security Centre (ACSC). One year on, the contrast between the two efforts is stark. The United States and Australia share a common interests in developing a robust partnership between the government and private sector to develop whole-of-system cybersecurity. To move beyond political optics, the ACSC must embrace existing best practices, commit to meaningful public-private partnerships, and set a pragmatic strategy moving forward. The Obama Administration’s efforts, while far from perfect, offer critical lessons that the Australian government can adopt and adapt to ensure that the ACSC is a successful endeavour and critical infrastructure cybersecurity is improved. This Strategic Insight report explores the details of the executive order, breaking down the challenges, criticisms, and successes of the effort to date, before offering clear lessons from the US experience that can be applied to the Australian context

Face enumeration on simplicial complexes

Let $M$ be a closed triangulable manifold, and let $\Delta$ be a triangulation of $M$. What is the smallest number of vertices that $\Delta$ can have? How big or small can the number of edges of $\Delta$ be as a function of the number of vertices? More generally, what are the possible face numbers ($f$-numbers, for short) that $\Delta$ can have? In other words, what restrictions does the topology of $M$ place on the possible $f$-numbers of triangulations of $M$? To make things even more interesting, we can add some combinatorial conditions on the triangulations we are considering (e.g., flagness, balancedness, etc.) and ask what additional restrictions these combinatorial conditions impose. While only a few theorems in this area of combinatorics were known a couple of decades ago, in the last ten years or so, the field simply exploded with new results and ideas. Thus we feel that a survey paper is long overdue. As new theorems are being proved while we are typing this chapter, and as we have only a limited number of pages, we apologize in advance to our friends and colleagues, some of whose results will not get mentioned here.Comment: Chapter for upcoming IMA volume Recent Trends in Combinatoric

Retrospective study of the correlation of serum potassium concentrations and the findings of heart auscultation in calves with neonatal diarrhea

A retrospective study was conducted of clinical records of calves with neonatal diarrhea up to the age of 14 days concerning certain aspects of blood potassium concentration and heart rate and rhythm. No correlation could be found between heart rates and serum potassium concentrations. Bradycardia was no indicator of hyperkalemia, nor could hyperkalemia be ruled out in animals with tachycardia. Cardiac arrhythmias were not associated with pronounced kyperkalemia, and did not indicate a poor prognosis. It was concluded that, at least in clinical cases of neonatal calf diarrhea, heart rate and rhythm are subject to complex influences and yield no information on the actual serum potassium concentration in a particular animal